Simplex Trading Portfolio holdings
Simplex Trading, founded in 2004 and headquartered in Chicago, Illinois, is a technology-driven proprietary trading firm specializing in market-making and liquidity provision, primarily in U.S. equity options and futures options. Leveraging advanced proprietary software and data-driven analysis, the firm optimizes trading strategies and develops innovative solutions to capitalize on financial market opportunities, maintaining a competitive edge through automation and a collaborative team of technologists and traders. With a workforce exceeding 300 and led by CEO Erik Swanson since 2014, Simplex operates with a low-ego, high-intelligence culture, focusing on minimal bureaucracy and rapid execution, while also making strategic venture capital investments in fintech startups. Recognized as a top workplace in Chicago by Built In’s 2025 awards, Simplex continues to evolve, blending cutting-edge technology with a commitment to market efficiency and growth.
Top Buys
| Rank | Stock | Value |
|---|---|---|
| 1 |
Amazon
AMZN
|
+$170M |
| 2 |
Invesco QQQ Trust
QQQ
|
+$71.3M |
| 3 |
AT&T
T
|
+$44.2M |
| 4 |
Meta Platforms (Facebook)
META
|
+$37.1M |
| 5 |
iShares MSCI Emerging Markets ETF
EEM
|
+$34.4M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Microsoft
MSFT
|
+$94.3M |
| 2 |
JPMorgan Chase
JPM
|
+$68.2M |
| 3 |
Citigroup
C
|
+$62.8M |
| 4 |
Berkshire Hathaway Class B
BRK.B
|
+$50.9M |
| 5 |
SPDR Gold Trust
GLD
|
+$46.3M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Consumer Discretionary | 0.38% |
| 2 | Technology | 0.35% |
| 3 | Communication Services | 0.24% |
| 4 | Healthcare | 0.2% |
| 5 | Consumer Staples | 0.13% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
4851
MPLX
MPLX
$58.6B
| $120K | ﹤0.01% |
3,671
-53,055
| -94% | -$1.74M |
|
|
OGI
4852
CALL
Organigram Holdings
OGI
$131M
| $120K | ﹤0.01% |
37,575
+16,750
| +80% | +$63K |
|
|
PLG
4853
CALL
Platinum Group Metals
PLG
$160M
| $120K | ﹤0.01% |
69,100
-47,000
| -40% | -$77.7K |
|
4854
CALL
Regenxbio
RGNX
$616M
| $120K | ﹤0.01% |
5,300
+4,300
| +430% | +$97.2K |
|
4855
PUT
Sypris Solutions
SYPR
$42.6M
| $120K | ﹤0.01% |
58,800
+48,700
| +482% | +$101K |
|
4856
CALL
Wave Life Sciences
WVE
$1.12B
| $120K | ﹤0.01% |
17,200
+2,300
| +15% | +$10.6K |
|
|
AKYA
4857
CALL
DELISTED
Akoya BioSciences
AKYA
| $119K | ﹤0.01% |
12,500
+2,200
| +21% | +$27.1K |
|
4858
CALL
AMC Global Media
AMCX
$450M
| $119K | ﹤0.01% |
7,600
-1,500
| -16% | -$29.7K |
|
4859
CALL
Fulton Financial
FULT
$4.68B
| $119K | ﹤0.01% |
7,100
-1,200
| -14% | -$21K |
|
4860
JPMorgan Nasdaq Equity Premium Income ETF
JEPQ
$37.9B
| $119K | ﹤0.01% |
+2,925
| New | +$124K |
|
4861
Magna International
MGA
$18.8B
| $119K | ﹤0.01% |
2,121
-10,823
| -84% | -$608K |
|
|
SOL
4862
CALL
DELISTED
Emeren Group
SOL
| $119K | ﹤0.01% |
26,400
+9,700
| +58% | +$44.8K |
|
|
AEVA
4863
PUT
Aeva Technologies
AEVA
$956M
| $118K | ﹤0.01% |
17,360
-18,140
| -51% | -$159K |
|
4864
CALL
EnerSys
ENS
$6.43B
| $118K | ﹤0.01% |
1,600
-2,400
| -60% | -$168K |
|
4865
PUT
Fox Factory Holding Corp
FOXF
$794M
| $118K | ﹤0.01% |
+1,300
| New | +$121K |
|
4866
The Honest Company
HNST
$412M
| $118K | ﹤0.01% |
39,361
+1,160
| +3% | +$3.62K |
|
4867
Lloyds Banking Group
LYG
$85.2B
| $118K | ﹤0.01% |
53,973
+15,461
| +40% | +$31.8K |
|
4868
PUT
Main Street Capital
MAIN
$5.05B
| $118K | ﹤0.01% |
3,200
-23,500
| -88% | -$859K |
|
|
SOND
4869
DELISTED
Sonder
SOND
| $118K | ﹤0.01% |
4,796
+3,560
| +288% | +$126K |
|
4870
Vanguard Morningstar Small-Cap Value ETF
VBR
$37.2B
| $118K | ﹤0.01% |
747
+626
| +517% | +$99.7K |
|
4871
CALL
Vanda Pharmaceuticals
VNDA
$304M
| $118K | ﹤0.01% |
16,000
-10,600
| -40% | -$103K |
|
|
CKPT
4872
CALL
DELISTED
Checkpoint Therapeutics
CKPT
| $117K | ﹤0.01% |
22,900
+19,080
| +499% | +$137K |
|
4873
CALL
Cellebrite
CLBT
$3.76B
| $117K | ﹤0.01% |
26,900
-200
| -0.7% | -$893 |
|
4874
PUT
Krispy Kreme
DNUT
$562M
| $117K | ﹤0.01% |
11,400
-59,600
| -84% | -$812K |
|
4875
PUT
Extra Space Storage
EXR
$32.3B
| $117K | ﹤0.01% |
800
+100
| +14% | +$16K |
|
Similar funds
Simplex Trading's Q4 2022 Portfolio in Review
As of Q4 2022, Simplex Trading held 11,206 positions worth $91.9B, up 3.9% from $88.5B the previous quarter. Its ten largest holdings account for 34% of the portfolio.
Simplex Trading's Q4 2022 filing shows 1,219 new, 3,365 increased, 4,370 reduced and 1,942 closed positions. Its largest new stake was iShares MSCI Emerging Markets ETF: 932,756 shares worth $35.4M. The largest sale was Microsoft, an estimated $94.3M.
By sector, the portfolio is most concentrated in Consumer Discretionary at 0.38% of assets, up from 0.3% a quarter earlier, followed by Technology and Communication Services.
- Simplex Trading's largest Q4 2022 buy was iShares MSCI Emerging Markets ETF: 932,756 shares worth $35.4M.
- Simplex Trading added most to Amazon in Q4 2022, an estimated $170M increase.
- Simplex Trading's biggest Q4 2022 reduction was Microsoft, cutting an estimated $94.3M.
- Simplex Trading fully exited JPMorgan Chase in Q4 2022, selling an estimated $68.2M.
- Simplex Trading's ten largest holdings make up 34% of its $91.9B portfolio in Q4 2022.
- Simplex Trading opened 1,219 new positions and closed 1,942 in Q4 2022.
- Simplex Trading's portfolio value rose 3.9% quarter-over-quarter to $91.9B.
Based on Simplex Trading's 13F filing for Q4 2022, filed 2 Feb 2023.